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 #include &lt;QtGui&gt;

 #include &quot;window.h&quot;

 Window::Window(QWidget *parent)
     : QWidget(parent)
 {
     setupModel();

     nameLabel = new QLabel(tr(&quot;Na&amp;me:&quot;));
     nameEdit = new QLineEdit();
     addressLabel = new QLabel(tr(&quot;&amp;Address:&quot;));
     addressEdit = new QTextEdit();
     ageLabel = new QLabel(tr(&quot;A&amp;ge (in years):&quot;));
     ageSpinBox = new QSpinBox();
     nextButton = new QPushButton(tr(&quot;&amp;Next&quot;));
     previousButton = new QPushButton(tr(&quot;&amp;Previous&quot;));

     nameLabel-&gt;setBuddy(nameEdit);
     addressLabel-&gt;setBuddy(addressEdit);
     ageLabel-&gt;setBuddy(ageSpinBox);

     mapper = new QDataWidgetMapper(this);
     mapper-&gt;setModel(model);
     mapper-&gt;addMapping(nameEdit, 0);
     mapper-&gt;addMapping(addressEdit, 1);
     mapper-&gt;addMapping(ageSpinBox, 2);

     connect(previousButton, SIGNAL(clicked()),
             mapper, SLOT(toPrevious()));
     connect(nextButton, SIGNAL(clicked()),
             mapper, SLOT(toNext()));
     connect(mapper, SIGNAL(currentIndexChanged(int)),
             this, SLOT(updateButtons(int)));

     QGridLayout *layout = new QGridLayout();
     layout-&gt;addWidget(nameLabel, 0, 0, 1, 1);
     layout-&gt;addWidget(nameEdit, 0, 1, 1, 1);
     layout-&gt;addWidget(previousButton, 0, 2, 1, 1);
     layout-&gt;addWidget(addressLabel, 1, 0, 1, 1);
     layout-&gt;addWidget(addressEdit, 1, 1, 2, 1);
     layout-&gt;addWidget(nextButton, 1, 2, 1, 1);
     layout-&gt;addWidget(ageLabel, 3, 0, 1, 1);
     layout-&gt;addWidget(ageSpinBox, 3, 1, 1, 1);
     setLayout(layout);

     setWindowTitle(tr(&quot;Simple Widget Mapper&quot;));
     mapper-&gt;toFirst();
 }

 void Window::setupModel()
 {
     model = new QStandardItemModel(5, 3, this);

     QStringList names;
     names &lt;&lt; &quot;Alice&quot; &lt;&lt; &quot;Bob&quot; &lt;&lt; &quot;Carol&quot; &lt;&lt; &quot;Donald&quot; &lt;&lt; &quot;Emma&quot;;

     QStringList addresses;
     addresses &lt;&lt; &quot;&lt;qt&gt;123 Main Street&lt;br/&gt;Market Town&lt;/qt&gt;&quot;
               &lt;&lt; &quot;&lt;qt&gt;PO Box 32&lt;br/&gt;Mail Handling Service&quot;
                  &quot;&lt;br/&gt;Service City&lt;/qt&gt;&quot;
               &lt;&lt; &quot;&lt;qt&gt;The Lighthouse&lt;br/&gt;Remote Island&lt;/qt&gt;&quot;
               &lt;&lt; &quot;&lt;qt&gt;47338 Park Avenue&lt;br/&gt;Big City&lt;/qt&gt;&quot;
               &lt;&lt; &quot;&lt;qt&gt;Research Station&lt;br/&gt;Base Camp&lt;br/&gt;Big Mountain&lt;/qt&gt;&quot;;

     QStringList ages;
     ages &lt;&lt; &quot;20&quot; &lt;&lt; &quot;31&quot; &lt;&lt; &quot;32&quot; &lt;&lt; &quot;19&quot; &lt;&lt; &quot;26&quot;;

     for (int row = 0; row &lt; 5; ++row) {
       QStandardItem *item = new QStandardItem(names[row]);
       model-&gt;setItem(row, 0, item);
       item = new QStandardItem(addresses[row]);
       model-&gt;setItem(row, 1, item);
       item = new QStandardItem(ages[row]);
       model-&gt;setItem(row, 2, item);
     }
 }

 void Window::updateButtons(int row)
 {
     previousButton-&gt;setEnabled(row &gt; 0);
     nextButton-&gt;setEnabled(row &lt; model-&gt;rowCount() - 1);
 }</pre>
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